Oil-feeding system for internal-combustion engines.



W. I. TWUMBLY. on. EEEDINS SYSTEM Eon INTERNAL coMBUSTIoN ENGINES. APPLIOATIOI FILED IAR. 8, 1911.

ATTORNEY w. 1. TWOMBLY. OIL FEEDING SYSTEM FOB. INTERNAL GOMBUSTION ENGINES.

nrmonmn HLBD Mmm, 1911.

Patelltd NOV. 19, 1912.

WITNEssEs: y mvENToRI www1/ Willard Irving f/ombly.

Y M AT ORNEY ing a part of this specification, Fi

.atras PATENT orne' WILL invINo TwoMELY, or NEW Eonx, N. E.,7ass1GNo n To-TWoMBLY morons comraNY, .or NEW Yonx, JN. Y.,

A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Nov. 19, 1912.

Application led March 6,1911. Serial No. 612,666.

To all whom, 'it may concern Be it known that -I VViLLAnD Invnfla TwoMBLY, a citizen of the Umted States, residing in the borough of Manhattan, 1n the city, county, and State of New York, have invented new and useful Improvements m Oil-Feeding Systems for InternaLQombusrtion Engines, of which the following 1s a specification.

'Ihis invention relates to oil feeding mechanism for internal combustion engines, and relates particularly to 'a mechanical oil feeding system wherein the oil is forced under pressure to the 'operative parts of the en gine, such as the crank-shaft bearings, the valve mechanism, the valve-operating cam shaft and piston, the excess oil drainin off and bein again utilized. With this o ject in view rovide the crank case, having a crank shaft): journaleditherein, with an oil reservoir, a pump of theY reciprocating type being supported within the crank case so that the pump body extends into said reservoir, said body having a normally closed inlet communicating with the oil in the reservoir and normally closed outlets branching out from said inletv with ducts connected to said outlets to lead the oil to .the operative parts ofthe engine. The pump piston or plunger is connected to and operated by the crank shaft, the upward stroke. of the lpump piston causing the inlet to be opene and drawing oil into the pump body; the downward stroke of the piston causing said inlet to beclosed and simultaneously therewith the o ening of the outlets to force the oil theret rough and the connected ducts. 'I he oil reservoir has an opening in the bottom with a plug screw threaded therein, a needle valve passing through said plug and screw threaded into the opening in the reservoir to engage in the inlet in the pump body, and adjustable to increase or decrease the size of said inlet to regulate the iow of oil. By removing the plug and needle valve the opening in the .reservoir may serve as a means to drain the oil from the reservoir.

In the drawings accompanying and forme 1 is a front end elevation of an oppose cylinder engine with my improved oiling system applied thereto, the crank case being in section h taken substantially on the lineAf-A of Fig.

2, and the pump also shown insection; and

lrhFig. 42 is a lsectional side elevation of' the engine, the section being taken substantiallylike arts throughout the diHerent views of 'the rawngs.

For the purpose of illustration I have shown my 1m roved oil feeding system in connection witg an internal combustion engine of the opposed cylinder type, as disclosed in my co-pending application filed August 15, 1910, Serial No. 577,179, Comprislng a rectangular or box like crank case, (ldesignated in a general way by 0,) open at t e top and having a removable cover 3. Opposed iston cylinders 4, 4 are fixed to the side o the case, each cylinder being provided With an upwardly projecting portion 5 to constitute a combustion and valve chamber, the said chambers having a projecting channel shaped portion 6 adapted to abut against the adjacent side of the crank case, and with the side of the crank case and combustion chamber constituting a fuel chamber open at Vthe top and having aremovable cover 7. The said chambers 6 are suitably connected to thesource of fuel supply, and fuel supplied to the cylinders from said chambers. The burnt gases are exhausted from the cylinders through pipes 9. A piston 10 (shown in dotted lines in Fig. 1) operates in a pair of opposed cylinders and is connected to a crank shaft l1, journaled in the endwalls 12 and 13. A valve-o erating cam-shaft 14 is also journaled in t e walls `12, 13 parallel with and driven from the crank shaft by a gear `15 fixed to said shaft meshing with a pinion on the crank shaft. The cam shaft has cams 16 fixed thereon to shaped members 18, to which are connected the stems 19 of the exhaust valves to operate said valves. Cams 20 are' also xed on said shaft at opposite sides of the cams 16 to engage with the stems 21 of the fuel-intake valves to operate the latter, said valve stems being hollow and slidably mounted on the stems of the exhaust valves.

y The forward end of the crank case is constructed with a compartment or chamber (designated in a general way by B) Similar characters of reference designate engage with rollers 17 carried by yoke" separate 'from the crankcase proper" by extending the side-walls beyond the wa'll 13, and has" 'an oil 'reservoirl 2 2 in the bottom thereof communicating with the bote tom of thecrankcase by an openin 23 .for a purpose to be hereinafter describe' .1 The forward end -of said chamb'enis open' and has a'removable cover or vwall 24 ,whereby the interior of-such chamber is readily ac-- of which extends through an opening inl the'bottom of tle chamber -B' into the oil reservoir 22, andis supported by a pair of arms 26 projecting laterally from the pump lbody and resting upon the bottom of said chamber. The pump body is provided with a. central bore 27 with a'plug 28 screw threadedy into the bottom having an inlet passage 29 ofless diameter than the bore and communicating with the oil in.

the reservoir, a 4ball 3@ *seated by gravity 1n sald inlet within the-bore normally closes the inlet.1 A pair of outlet passages 31 branch out atright angles from the bore,

(which maybe formed by drilling in from the side ofthe pump body and then closing the outer `end of saiddrill ho1e,) and then extend parallel with the bore'having outlets in bosses projecting out from the sides of the' pump body near the top, as at 32.

rlhe. portion'ofthe outlet passages extendingparallel with the pump bore are formed by drilling in from the top of the pump body and then closing the ends with screw plugs, l36. Connected tosaid outlets as by couplings or unions'33 are ducts 34 extendmg up the side. walls 'of the` crank case A then inwardly toward and along thecenter of said case, having outlet nipples or` spouts 35 over the camshaft and valve mechanism to permit of the dripping of the oil thereon,'

from whence it dri s onto-the crank shaft bearings, pistons, an 'pistonvan'd crank shaft connection.

by balls 37 seated 'in the elbow portions formed 1n said passages, and maintained upon their seats by springs 38. conned bei tween said balls and the plugs 36.

body and is p ivotallyv connected, as at 40, toone of a palrof connected straps 41 encircling acam'or eccentric disk 42 keyed to the crank shaft, said disk 'as the crank shaft revolvesrotating in the straps andV reciprocating the piston. The p1ston may be provided with 'a suitablev stuling box 43, shown in the present instance as comprising a boss projecting out from the top ofthe pump bodywith acap screw-threaded i thereon and packing interposed between the 4 cap and boss.

To regulate the flow of .oil provi-dea,-

needle valve 44 having a knurled head, and' screw threaded into a tapped hole inthe .bottom of the oil reservoir, said valve engaging Ain the' inlet 29 vin the plug'28 and by screwing it in or out increasing-or decreasing the size o f said opening. The valve may be provided with a suitable-.stuffs ing box to preventthe oozing or dripping v out of the oil, and forlthis purpose the oil reservoir is provided' with a boss projectingl lout from that portion through which the needle `valve passes, said boss having a counterbore with a plug 46 screw threaded thereinto, the valve also passing through said plug, and packing 47'interposed be` tween the plug andthe bottomof the counterbore. By removing the valve and plug. the* said opening may also be utilized to drain the oil from the reservoir.

My improved oil feedingsystem operates. i

substantially as follows: As the crank shaft 11 rotates the eccentricdisk 42f'rotating in the strap 41 causes thepiston 39 to jrecip rocate, each revolution ofthev crank shaft During the upward stroke of the piston impart-ing one reciprocation to thepiston.-

the sucking action .will draw the ball 30' away from its seat and'suck the oillfrom the oil reservoir throughtho'ffinletpassage 29 in theplug 28, and" a',s"the `piston descends the ball 30 -is again seated and the.

oil sucked in during theupwardstroke of the piston will unseat the .balls I37 'the Aoutlet passages 31 against the'- tension-of the springs 38 forcing the oil under-pressure through said outlet passages `and the connected ducts 34 `to the outlets 35,' from lwhence it drips onto ,the cams and valve mechanism, the surplus. oil dripping from said cams Yand valve mechanisml onto .the plston, crank shaft bearings, and piston and crank connection. The surplus oil from saidl latter mechanism drips lnto the Loil reservoirto be again utilized;

bottom of the crank caseffrom whence 'it is drained through the opening23 into the The outlet passages 31 are normally closed 11.5

tem in Vconnection with an internal combusj I tion engine, it will be obvious that' the same may be readily applied to'other mechanism, A reclprocatory piston or plunger 39 engages 1n the central bore 27 of the pump 1. An oil feeding 'system forfengines, i i

`comprisingin` combmationj with the crank "case having an' oil reservoir'and acrank shaft jourualed in said case, of a pump body supported by the crank'case to extend into. Ithe oil reservoir, said body having a central borefand an inletin the bottom communieating with the oil in the' reservoir'with a 130.-

pair of outlets branchin out from 'said inlet; means to normally c ose the inlet to the pump body; means to normally close the outlets from the pump nected to the outlets and leading to the operative parts of the engine; a iston to reciprocate in the bore of the bod) connected to and reciprocated by the crank shaft; said piston during its upward stroke openin the inlet and drawing oil into the pump ody and during its downward stroke closing the inlet and opening the outlets forcing the oil through said outlets and the connected ducts; and a needle'valve passing through the bottom of the oil reservoir and engaging in the inlet to the pump casing to regulate the flow of oil.

2. An oil feeding system for engines, comprising in comblnation with the crank case having an oil reservoir and a crank shaft journaled in said case, of a pump body supported by the crank case to extend into the oil reservoir, said body having a central bore, and an inlet communicating with the oil in the reservoir with a air of outlets branching out from the said inlet; a ball normally seated in and closin said inlet; balls seated in and closing sai outlets; springs to maintain said latter balls u on their seats; ducts connected to the out ets and leading to the operative parts of the engine; a piston to reciprocate in the bore of the pump body connected to and reciprocated by the crank shaft; said isto'n during its upward stroke unseating tlib ball in the inlet and drawing oil into the pumpv body and during its downward stroke seating said ball to close the inlet and unseating the balls in the outlets against the tension of the springs forcing o1l through said outlets and the connected ducts; and a needle valve screw threaded into the bottom of the oil reservoir and engaging in the inlet of the pump body to regulate the iow of oil.

3. An oil Afeeding system for engines, comprising in combination with the crank case having an oil reservoir and a crank shaft journaled in said case, of a pump body supported within the crank case-to extend into the oil reservoir, said body having a central bore; a plug screw threaded into the bottom of the pump body havin an inlet passage of less diameter than t e bore in the pump body and communicating with the oil reservoir and said bore; a ball normally body; ducts conative parts of vthe engine;

seated in and closing said inlet; outlets branching out from the inlet passage in said plug; balls seated in and closing said outlets; springs to maintain said latter balls upon their seats; ducts connected to the outlets and leading to the operative parts of the engine; a piston to reciprocate in the bore of the pump body; means to connect said piston to and reciprocate it by the crank shaft, comprising an eccentric disk fixed to the crank shaft, a strap encircling the periphery of andin which the disk rotates, said strap pivotally connected tothe iston; said piston during its upward stro e unseating the ball in the inlet passage in the plug and drawing the oil into the pump body, and during its downward stroke seating said ball to close the inlet and unseating the balls in the outlets against the tension of the springs, forcing oil through said outlets and the -connected ducts; and a needle valve screw-threaded into the bottom of the oil reservoir and engaging in the inlet in the plu to regulate the flow of oil.

4. An oil fee 'ng system for engines, comprising in combinatlon with a crank case having an oil reservoir' and a crank shaft journaled vvin said case; of a pump body supported within the crank case to extend into the oilreservoir, said body having'a central bore, and a normally closed inlet 1n the bottom communicating with the oil reservoir with a pair of normally closed outlets branching out from the inlet; ducts connected to the outlets leading to the opera piston to reciprocate in the bore of the body connected to and reciprocated by the crank shaft; said piston durln its upward stroke opening the inlet an drawing oil into the pump body and durin its downward stroke closing the inlet an opening the outlets forcing the oil through said outlets and the connected, ducts; an opening in the bottom of the oil reservoir; a plug screw threaded mto said o ening; and a needle valve assmg throug said lug and the bottom o the 011 reservoir, said) valve engagmg 1n the lnlet to the pump body to regulate the ow of oil; said opening also serving to dram the oilfrom the reservoir.

WILLARD IRVING TWOMBLY.

Witnesses:

J oHN O. Smm?, PAULA Pm?. 

